Project Highlights

We are continuing to upload projects to the list below that highlight the use of trenchless technology in the Pacific Northwest. Clicking on the project name will take you to some selected project photos. Please feel free to contact the person or organization associated with the project for more project specific information.

TechnologyProject Name/Description
Cured-In-Place-Pipe (CIPP)Chelsea Park Rehabilitation Project
Multi-phase rehabilitation of approximately 60,000 feet of 8″ to 15″ diameter sewer mains in Burien, WA
Gas Line & PVC SlittingGas Line & PVC Trenchless Slitting Methodology, A Short History & Current Operations
Guided BoringOutfall 33 Rehabilitation
Urgent Sewer Repair using Pilot Tube Construction Method
Microtunneling, HDD, MT/HDD HybridLarge Diameter Trenchless Pipeline Construction
MicrotunnelingBalch Consolidation Conduit
6,500 feet of 84-inch MT over five drives with the longest drive being 1,690 feet in Portland, OR
Open Shield Pipe Jacking (OSPJ)Madison Valley Long Term Storage Solution, SPU
OSPJ 2,500 feet of 60-inch diameter steel casing used to install 48-inch ductile iron storm sewer in Madison Valley, WA
SlipliningLarge Diameter Sliplining

Become a NASTT Member

When you join the North American Society for Trenchless Technology (NASTT), you’ll belong to the largest community of trenchless professionals in the USA and Canada committed to promoting better and more responsible ways to manage underground infrastructure and advance trenchless technology for the benefit of the public and the natural environment.

Join as a college student or individual professional or get group savings as an organization with a corporate or government/education/utility membership. Chapter membership is included with NASTT membership.